[clang] [clang][Sema] Don't issue -Wcast-function-type-mismatch for enums with a matching underlying type (PR #87793)

[Aaron Ballman via cfe-commits]

https://github.com/AaronBallman approved this pull request.

LGTM! Do you need someone to land this on your behalf?

https://github.com/llvm/llvm-project/pull/87793